He's swapped tailored suits for tight tees, Parliament Hill for Swiss peaks - and a buttoned-up marriage for adrenaline-fueled bonding trips with his sons and a cozy dinner with Katy Perry.

Nearly a year after splitting from wife Sophie Grégoire Trudeau, the former Canadian Prime Minister has debuted a full-blown divorce glow-up: trading suits for sleeveless tees, diplomatic meetings for mountaineering, and family portraits for alpine selfies.

In his latest Instagram post that Trudeau, 53, shared a day after he was seen out with the popstar, the loving dad posed atop a snowy slope in Zermatt, Switzerland with 17-year-old son Xavier, ice axes in hand and mountaineering rope tied between them.

'More melted cheese than anyone should safely eat,' he joked, capturing the bro-y, dad-on-the-loose energy that's defined his recent feed.

And before that he was seen on a sun-drenched Canadian road trip with his youngest son Hadrien, 9, that included rock climbing, hiking, and even a kiss from a sea lion.